Hi. Does anybody use Google Ads to promote work nowadays? Does it worth?

Just to know experiences from other authors to see what works and what doesn´t work…is any of the huge community of authors using nowadays Google Ads to promote projects and portfolio? Does it worth the invested money? Good results, or nothing? What is more convenient: promoting 1 particular item or a whole portfolio?
Any ideas, suggestions or advices would be really appreciated a lot.
Thanks! :+1::wink: